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POHtml.ListBox() and MultiselectList
 

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    <p>I've a little problem with an Html.ListBox.</p> <p>I am developing a personal blog in ASP.NET MVC 1.0 and I created an <code>adminpanel</code> where I can add and edit a post! During this two operations, I can add also tags.</p> <p>I think of use an <code>Html.ListBox()</code> helper to list all tags, and so I can select multiple tags to add in a post! The problem isn't during the add mode, but in the edit mode, where I have to pre-select post's tags.</p> <p>I read that I have to use a <code>MultiSelectList</code> and so in its constructor pass, tags' list and tag's list(pre-selected value).</p> <p>But I don't know how to use this class.</p> <p>I post, some code:</p> <p>This is my models method that get all list tags in selectlist</p> <pre><code>public IEnumerable&lt;SelectListItem&gt; GetTagsListBox() { return from t in db.Tags orderby t.IDTag descending select new SelectListItem { Text = t.TagName, Value = t.IDTag.ToString(), }; } </code></pre> <p>So in Edit (Get and Post), Add(Get and Post) I use a ViewData to pass this list in <code>Html.ListBox()</code>.</p> <pre><code>ViewData["Tags"] = tagdb.GetTagsListBox(); </code></pre> <p>And in my view</p> <pre><code>&lt;%=Html.ListBox("Tags",ViewData["Tags"] as SelectList) %&gt; </code></pre> <p>So with this code it's ok in Add Mode.</p> <p>But in Edit Mode I need to pre-select those values.</p> <p>So Now, of course I have to create a method that get all tagsbypostid.</p> <p>and then in <code>ViewData</code> what Must I to pass?</p> <p>Any suggest?</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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